CVE-2026-42484

A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash file. The issue affects modules 17200, 17210, 17220, 17225, and 17230. When data_type_enum<=1, attacker-controlled hex data from a user-supplied hash string is decoded into a fixed-size buffer without proper input-length validation.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f	Exploit Mitigation Third Party Advisory
https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f	Exploit Mitigation Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hashcat:hashcat:7.1.2:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-01 14:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42484

Mitre link : CVE-2026-42484

CVE.ORG link : CVE-2026-42484

JSON object : View

Products Affected

hashcat

hashcat

CWE

CWE-787

Out-of-bounds Write

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